I created this to grep the mailbox.log file located in /opt/zimbra/log/ to find which version of the ZCO users are running. This will, of course, only find users which have contacted the server in the current log file.

Good one goonsniper. Thanks. But I guess the uniq there doesn't effectively filter out duplicate lines of with the account name. Mailbox log has multiple lines that contains the account name while carrying out a particular connector event. I just tried and came across this.

Some activity not having to do with the ZCO Connector in the mailbox log will contain the characters "ZCO", being able to run this handy script from anywhere would be nice, being able to see who the very active users are, and eliminating the duplicates, which can be done by piping the output through "sort", would also be nice, so I offer the minor modifications below: